Overview

overview

9

Static

static

Fortnite C...ro.exe

windows7_x64

9

Fortnite C...ro.exe

windows10_x64

9

Analysis

  • max time kernel
    120s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    24-10-2021 17:19

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General

  • Target

    Fortnite CFFHOOK by Spyro.exe

  • Size

    2.0MB

  • MD5

    3febb821c9c21263bf4e04b451a02644

  • SHA1

    a8e13a65ab2cf7178f91789b2551eab05f937885

  • SHA256

    100fa8dbdf8aeb6605ce6aae5880d93f754fc8258cba143d68f861350f685efd

  • SHA512

    337896b6c1a2efb3b2b032f44afff8e6bb3412f15d3eb2c5a1d66ec0d98283e0e98de02146f7a079bebbe5f82587daf7cd6b53c6745b7995ae20cce293602ab1

Score
9/10
bootkitdiscoveryevasionpersistencespywarestealertrojan

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
    evasion
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    evasion
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
    spyware
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Fortnite CFFHOOK by Spyro.exe
    "C:\Users\Admin\AppData\Local\Temp\Fortnite CFFHOOK by Spyro.exe"
    1⤵
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Checks whether UAC is enabled
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1640

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

1
T1067

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

2
T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • memory/1640-54-0x0000000075821000-0x0000000075823000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1640-56-0x0000000000140000-0x0000000000141000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1640-58-0x0000000005040000-0x0000000005041000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1640-59-0x0000000000980000-0x0000000000981000-memory.dmp
    Filesize

    4KB

    Download